http://d.puremagic.com/issues/show_bug.cgi?id=7085
Summary: std.algorithm.reverse() problem with Unicode dchar[]
Product: D
Version: D2
Platform: x86
OS/Version: Windows
Status: NEW
Severity: normal
Priority: P2
Component: Phobos
AssignedTo: nob...@puremagic.com
ReportedBy: bearophile_h...@eml.cc
--- Comment #0 from bearophile_h...@eml.cc 2011-12-09 01:32:52 PST ---
This code compiles and runs raising no assert error, so reverse() is giving a
wrong result on a dchar[]:
import std.algorithm: reverse;
void main() {
dchar[] txt = "\U00000041\U00000308\U00000042"d.dup;
txt.reverse();
assert(txt == "\U00000042\U00000308\U00000041"d);
}
txt contains LATIN CAPITAL LETTER A, COMBINING DIAERESIS, LATIN CAPITAL LETTER
B. See bug 7084 for more details.
A more correct output for reversing txt is (LATIN CAPITAL LETTER B, LATIN
CAPITAL LETTER A, COMBINING DIAERESIS):
"\U00000042\U00000041\U00000308"d
or even (LATIN CAPITAL LETTER B, LATIN CAPITAL LETTER A WITH DIAERESIS) (but
this changes the array size and it's not necessary):
"\U00000042\U000000C4"d
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